Olivia Olson

Acting

Born May 21, 1992 · Los Angeles, California, USA

Olivia Rose Olson (born May 21, 1992) is an American actress and singer-songwriter, mostly known for her voice roles as Vanessa Doofenshmirtz in Phineas and Ferb and Marceline the Vampire Queen in Adv…

Known for

Adventure Time

2010

Phineas and Ferb

2007

Phineas and Ferb

2007

Steven Universe

2013

Adventure Time: Fionna and Cake

2023

Adventure Time: Fionna and Cake

2023

We Baby Bears

2022

We Baby Bears

2022

Acting(23)

2026Adventure Time: Side QuestsMarceline (voice)

2023Adventure Time: Fionna and CakeMarceline / Celine (voice)

2022The Laughter & Secrets of Love Actually: 20 Years Later – A Diane Sawyer SpecialSelf

Film